Pneumatic Products, Standard Couplings & Nipples

Series 421, DN 10

  • One-hand operated
  • Strong and durable
  • High-flow capacity

Series 421 couplings offer high-flow capacity and are insensitive to vibrations. One-hand operated with steel components for strength and durability.


Series 421, DN 10
Technical data
Nominal flow diameter: 10 mm (13/32"")
Air flow: 3200 l/min (113.0 CFM)
Max. working pressure: 16 bar (232 PSI)
Min. burst pressure: 64 bar (928 PSI)
Connection force: 160 N
Temperature range: -30°C — +100°C (-22°F — +212°F)
Material coupling: Zinc-plated steel
Material nipple: Hardened zinc-plated steel
Interchangeable with: Atlas Copco QIC15
Standards: AC Q15, 10 mm
Markets: Global

Flow capacity is measured at 6 bar (87 PSI) inlet pressure, and pressure drop at 0.5 bar (7 PSI)

Couplings Part No. Connection
Hose connection 10 421 100410421100410 mm (3/8")
 10 421 100510421100513 mm (1/2")
 10 421 100610421100616 mm (5/8")
Male thread 10 421 1154104211154R 3/8"
 10 421 1155104211155R 1/2"
Female thread 10 421 1205104211205G 1/2"


Nipples Part No. Connection
Hose connection 10 421 50021042150026.3 mm (1/4")
 10 421 50031042150038 mm (5/16")
 10 421 500410421500410 mm (3/8")
 10 421 500510421500513 mm (1/2")
 10 421 500610421500616 mm (5/8")
Male thread 10 421 5152104215152R 1/4"
 10 421 5154104215154R 3/8"
 10 421 5155104215155R 1/2"
 10 421 5254104215254G 3/8"
 10 421 5255104215255G 1/2"
Female thread 10 421 5202104215202G 1/4"
 10 421 5204104215204G 3/8"
 10 421 5205104215205G 1/2"


Check with an authorized CEJN distributor for availability and prices. Other connections and sealing material on request. Some part numbers may be subject to minimum order quantities. CEJN reserves the right to make changes without further notification. Thread connections are listed according to ISO Standards.

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